CN104520752A - Head-up display - Google Patents
Head-up display Download PDFInfo
- Publication number
- CN104520752A CN104520752A CN201380041248.6A CN201380041248A CN104520752A CN 104520752 A CN104520752 A CN 104520752A CN 201380041248 A CN201380041248 A CN 201380041248A CN 104520752 A CN104520752 A CN 104520752A
- Authority
- CN
- China
- Prior art keywords
- head
- light
- display
- intermediate screen
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0145—Head-up displays characterised by optical features creating an intermediate image
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
Abstract
The invention relates to a head-up display (1), in particular for use in a vehicle, comprising a light source (2.1) and a projection screen (6), wherein an intermediate screen (3) is provided for the orientation of a light (L) emitted from a light source (2.1) and, resulting therefrom, for the shaping of an image (B) to be displayed on the projection screen (6). According to the invention, the intermediate screen (3) is at least partially reflective.
Description
Technical field
The present invention relates to a kind of head-up display especially for using in vehicle, described head-up display comprises light source and projection screen, wherein intermediate screen is arranged for the directed light sent by light source, and thus causes the image that will be present in for being shaped on described projection screen.
Background technology
Prior art discloses display device, it is generally designated as the so-called head-up display for automobile application.Head-up display is for by virtual image being outputted to the driver of vehicle in the region of the windshield of vehicle, the instrument from the panel board being arranged in vehicle extends the display of information to described region.In this case, these virtual images are exporting apart from the specific distance of the eyes of observer, and wherein said distance is selected with when staring the refocusing from minimizing eyes when seeing that information displaying changes to the surroundings outside of vehicle in this way.The energy presenting the observer reduced for remembeing described information of this information by head-up display and the figure realizing meeting the surrounding environment of vehicle present.This head-up display comprises intermediate screen, and the information projection that be shown is on described intermediate screen.Intermediate screen is implemented in a transparent manner and is arranged for the directed light sent by light source.The image that will be projected screen display is rendered as by the light of intermediate screen transmission.Projection screen is embodied as independent screen or is formed by the region of windshield or windshield, and described Region specification is combiner and is embodied as partially transparent and part refraction.
WO 2001/009709 A1 discloses a kind of head-up display, and it comprises light source and the display for generation of image, and wherein said image is projected in the visual field of user by optical system.Optical system comprises the diffractive combiner of the hologram generated for Import computer.Light source and display control by electronic control circuit.Light source cell comprises with the non-coherent light generator of the mode of arranged in succession on the direction of light beam, for increasing device and the beam shaping element of coherence, described beam shaping element for by described in coming from for increasing light scattering on the rear side of display of the device of coherence.
Summary of the invention
The object of the invention is to propose a kind of head-up display compared with prior art improved.
According to the present invention, described object is realized by the head-up display with feature described in claim 1.
Dependent claims relates to favorable structure of the present invention.
Head-up display comprises light source and projection screen, and wherein, intermediate screen is arranged for the directed light sent by light source, and consequently, will be present in the image on described projection screen for being shaped.
According to the present invention, intermediate screen is implemented in the mode reflected at least partly.
This particularly advantageously causes the backlight of the image that will be presented to minimize, and described backlight is caused by surround lighting.Describedly minimize then have such result, that is: equally particularly advantageously, the illumination that the image that be presented is caused by surround lighting is minimum, and as a result, the contrast of the image that be presented increases.Realize further as a result: can realize presenting of image especially truly, wherein said imaging importing is to by the visual surrounding environment of the windshield of vehicle.
According to a kind of possible structure, intermediate screen is implemented in the mode reflected completely, result, makes the backlight of the image caused by surround lighting minimize the high-contrast making to realize image especially simply.
In one is improved, intermediate screen comprises light filter and reduces further to make the realizing impact of surround lighting on virtual image.
In order to effectively obtain this reduction especially, improve according to one, the light that light filter is implemented to make only to be produced by light source in this way can reflect from described intermediate screen.
In one is improved, implement to make surround lighting to be absorbable, transmissive in this way on the light filter of the impact of virtual image for reducing surround lighting or can reflect in a predetermined direction.
According to a kind of another possible structure, intermediate screen is implemented the backlight of the image that must be presented is minimized in the mode of part reflection in this way, and described backlight is caused by surround lighting.
In a kind of possible improvement, for this purpose, intermediate screen comprises light filter, and implementing according to described light filter of another structure the light that makes only to be produced by light source in this way can be implemented make surround lighting be reflexible, absorbable or can deflect in a predetermined direction according to described light filter of another structure in this way by intermediate screen transmission.
Construct according to one, projection screen also comprises light filter, described light filter implement in this way the light that makes only to be produced by light source cell can from projection screen towards the reflection of the direction of observer and surround lighting be absorbable, transmissive or can reflect at predetermined different directions.Therefore, the impact of surround lighting significantly reduces further.
Accompanying drawing explanation
Hereinafter exemplary embodiment of the present invention is described in greater detail with reference to the attached drawings.
In the accompanying drawings, in this case,
Fig. 1 schematically shows the first exemplary embodiment according to head-up display of the present invention, and described head-up display comprises intermediate screen, and wherein intermediate screen is implemented in the mode reflected at least partly,
Fig. 2 schematically shows the reflection characteristic of the light produced about the light source by head-up display according to the intermediate screen of Fig. 1, the frequency of described reflection characteristic as described light or the function of wavelength,
Fig. 3 schematically shows the second exemplary embodiment according to head-up display of the present invention, and described head-up display comprises intermediate screen, and wherein said intermediate screen is implemented in a transparent manner,
Fig. 4 schematically shows the transmissison characteristic of the light produced about the light source by head-up display according to the intermediate screen of Fig. 3, the frequency of described transmissison characteristic as described light or the function of wavelength, and
Fig. 5 schematically shows the reflection characteristic of the light produced about the light source by head-up display according to the intermediate screen of Fig. 3, the frequency of described reflection characteristic as described light and the function of wavelength.
Embodiment
Part mutually corresponding is in all of the figs provided with identical Reference numeral.
Fig. 1 schematically shows the first exemplary embodiment according to head-up display 1 of the present invention.
Head-up display 1 comprises image-generating unit 2, and described image-generating unit 2 comprises light source cell 2.1 and at least one so-called micro-system 2.2, and described micro-system 2.2 is appointed as MEMS (micro electro mechanical system) and (is called for short: MEMS).
There is redness, green and blue light L produced by light source 2.1 (such as, laser).
In the head-up display situation known from prior art, described light is guided through the intermediate screen implemented in a transparent manner in a not shown manner, and described the intermediate screen in this way directed and described light that is shaped occurs on the projection screen to make the image that must be presented.Cause the backlight of intermediate screen at this surround lighting disadvantageously existed, thus cause the contrast of the image that will be presented to reduce.This has such result conversely, that is: when visual surrounding environment is presented by described imaging importing, reduce the impression truly presenting effect.
In order to overcome these shortcomings, the backlight implementing the image B making to be presented according to the intermediate screen 3 in the exemplary embodiment illustrated of head-up display 1 of the present invention in this way minimizes, and described backlight caused by surround lighting.
For this reason, intermediate screen 3 is implemented in the mode of reflection.Therefore, avoid the backlight of the image B caused by surround lighting, therefore result is the high-contrast of image B.
Directional light L reflexes on mirror 4 by intermediate screen 3, and described mirror 4 is implemented and adjustable in the degree of tilt of described mirror 4 in a concave manner, and light L reflexes to another mirror 5 from described mirror 4.
Virtual image B is by reflexing to light L on projection screen 6 by mirror 5 and outputting to observer P (driver of such as vehicle).
Projection screen 6 is embodied as such as independent screen and is arranged in the region between the panel board of vehicle and windshield.And, described windshield at least partially, so-called combiner can form projection screen 6.
In order to reduce the impact of surround lighting on virtual image B further, in one is improved (more specifically not illustrating), intermediate screen 3 comprises light filter extraly, the light L that described light filter is implemented to make only to be produced by light source 2.1 in this way reflects from intermediate screen 3 towards the direction of mirror 4, and surround lighting is absorbed, transmission or reflect on the direction being different from mirror 4.
Light filter is formed by photosensitive and/or photorefractive material (such as, polymkeric substance).In order to optionally reflect, absorb, transmission and/or reflection, holographic structure is preferably introduced in described material.Describedly be introduced through one or more laser beam and realize making to carry out being irradiated to the amplitude of light L on described intermediate screen and surround lighting and/or phase-modulation and filter out context light by intermediate screen 3.In this case, described filtration is carried out according to the wavelength and/or incident angle that irradiate light L and surround lighting.
Fig. 2 schematically shows the reflection characteristic R of the light L produced about the light source 2.1 by head-up display 1 according to the intermediate screen 3 of Fig. 1, the frequency f of described reflection characteristic R as light L and the function of wavelength X.This illustrative clarity ground shows that the light L only produced by light source 1 is reflected.
Fig. 3 schematically shows the second exemplary embodiment according to head-up display 1 of the present invention.Compared with the exemplary embodiment shown in Fig. 1, intermediate screen 3 is implemented in the mode of partially transparent and is arranged in this way make described intermediate screen 3 by the light L transillumination sent, in a limiting fashion directed described light and described light is sent to mirror 4.
The backlight that intermediate screen 3 implements the image B making to be presented further equally is in this way minimum, and described backlight is caused by surround lighting.For this purpose, intermediate screen 3 comprises light filter 7, and the light L wherein only produced by light source 2.1 is by light filter 7 transmission.Surround lighting is reflected, absorb or towards being different from the direction upper deflecting of mirror 4.
The light filter 7 schematically shown in Fig. 4 is formed by photosensitive and/or photorefractive material (such as, polymkeric substance).In order to optionally reflect, absorb, transmission and/or reflection, holographic structure is preferably introduced in described material.Described introducing is such as realized by one or more laser beam to make to carry out being irradiated to the light L of described intermediate screen and the amplitude of surround lighting and/or phase-modulation and filter out context light by intermediate screen 3.In this case, described filtration is carried out according to the wavelength X and/or incident angle of irradiating light L and surround lighting.
Fig. 5 schematically shows the reflection characteristic R of the light L produced about the light source 2.1 by head-up display 1 according to the intermediate screen 3 of Fig. 3, the frequency f of described reflection characteristic R as light L and the function of wavelength X.This illustrative clarity ground shows that the light L only produced by light source 1 is by the direction transmission towards mirror 4.
In alternate exemplary embodiment (not shown) or except the performance described by the head-up display 1 of the first or second exemplary embodiment, projection screen 6 is configured to the light filter comprised according to the description of the first exemplary embodiment and reflects from projection screen 6 towards the direction of observer to make the light L only produced by light source 2.1.
Reference numerals list
1 head-up display
2 image-generating units
2.1 light source
2.2 micro-system
3 intermediate screens
4 mirrors
5 mirrors
6 projection screens
7 light filters
B image
L light
F frequency
P observer
R reflection characteristic
Λ wavelength
Claims (10)
1. a head-up display (1), especially for using in vehicle, described head-up display (1) comprises light source (2.1) and projection screen (6), wherein intermediate screen (3) is arranged for the directed light (L) that sent by light source (2.1) thus causes for the image (B) that will be present on described projection screen (6) that is shaped, it is characterized in that, described intermediate screen (3) is formed as part reflection.
2. head-up display according to claim 1 (1), is characterized in that, described intermediate screen (3) is formed as reflecting completely.
3. head-up display according to claim 2 (1), is characterized in that, described intermediate screen (3) comprises light filter.
4. head-up display according to claim 3 (1), it is characterized in that, the light (L) that described light filter is formed to make only to be produced by described light source (2.1) in this way can reflect from described intermediate screen (3).
5. the head-up display (1) according to claim 3 or 4, is characterized in that, described light filter is formed to make surround lighting to be absorbable, transmissive in this way or can reflect towards predetermined direction.
6. head-up display according to claim 1 (1), is characterized in that, described intermediate screen is formed as part reflection.
7. head-up display according to claim 6 (1), is characterized in that, described intermediate screen (3) comprises light filter (7).
8. head-up display according to claim 3 (1), it is characterized in that, the light (L) that described light filter (7) is implemented to make only to be produced by described light source (2.1) in this way can by described intermediate screen (3) transmission.
9. the head-up display (1) according to claim 3 or 4, is characterized in that, described light filter (7) is implemented make surround lighting be reflexible, absorbable or can deflect towards predetermined direction in this way.
10. head-up display according to claim 1 (1), it is characterized in that, described projection screen (6) comprises light filter, described light filter (6) implement in this way the light (L) that makes only to be produced by described light source (2.1) can from described projection screen (6) towards the reflection of the direction of observer and surround lighting be absorbable, transmissive or can reflect towards predetermined different directions.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012015502 | 2012-08-04 | ||
| DE102012015502.6 | 2012-08-04 | ||
| PCT/EP2013/066278 WO2014023658A2 (en) | 2012-08-04 | 2013-08-02 | Head-up display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104520752A true CN104520752A (en) | 2015-04-15 |
| CN104520752B CN104520752B (en) | 2018-10-12 |
Family
ID=48918394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380041248.6A Expired - Fee Related CN104520752B (en) | 2012-08-04 | 2013-08-02 | Head-up display |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10261314B2 (en) |
| JP (1) | JP2015524944A (en) |
| CN (1) | CN104520752B (en) |
| DE (1) | DE112013003876A5 (en) |
| WO (1) | WO2014023658A2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045027A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Front projection-type virtual image display method and display system |
| CN105388613A (en) * | 2014-08-28 | 2016-03-09 | 罗伯特·博世有限公司 | Image generation equipment, head-up display and method for generating image |
| CN109416471A (en) * | 2016-08-05 | 2019-03-01 | 株式会社电装 | Head-up display |
| CN109407319A (en) * | 2018-11-30 | 2019-03-01 | 深圳点石创新科技有限公司 | Head-up-display system and vehicle |
| CN109844605A (en) * | 2016-06-29 | 2019-06-04 | 法雷奥舒适驾驶助手公司 | Video generation device and relevant head-up display including thermally contacting area |
| CN109844604A (en) * | 2016-06-29 | 2019-06-04 | 法雷奥舒适驾驶助手公司 | Video generation device and relevant head-up display |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013203616B4 (en) * | 2013-03-04 | 2019-10-24 | Sypro Optics Gmbh | Apparatus for projecting an image into a display area with screen for intermediate image display |
| JP6455230B2 (en) * | 2015-03-02 | 2019-01-23 | 株式会社デンソー | Head-up display system |
| CN104765155B (en) * | 2015-03-31 | 2017-08-01 | 深圳市光科全息技术有限公司 | A kind of virtual image shows system |
| KR102509086B1 (en) * | 2017-07-05 | 2023-03-10 | 삼성디스플레이 주식회사 | Holographic head up display device |
| FR3102569A1 (en) * | 2019-10-23 | 2021-04-30 | Valeo Comfort And Driving Assistance | Head-up display |
| KR102508931B1 (en) * | 2020-07-23 | 2023-03-09 | 현대모비스 주식회사 | Holographic HUD |
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| CN109844605A (en) * | 2016-06-29 | 2019-06-04 | 法雷奥舒适驾驶助手公司 | Video generation device and relevant head-up display including thermally contacting area |
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| CN109407319A (en) * | 2018-11-30 | 2019-03-01 | 深圳点石创新科技有限公司 | Head-up-display system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015524944A (en) | 2015-08-27 |
| CN104520752B (en) | 2018-10-12 |
| WO2014023658A3 (en) | 2014-06-12 |
| DE112013003876A5 (en) | 2015-04-16 |
| US10261314B2 (en) | 2019-04-16 |
| US20150219894A1 (en) | 2015-08-06 |
| WO2014023658A2 (en) | 2014-02-13 |
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